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For the 2007 novel by Grace O'Malley, see Grania: She-King of the Irish Seas.
Scientific classification
Kingdom: Animalia
Phylum: Annelida
Class: Clitellata
Order: Haplotaxida
Family: Enchytraeidae
Genus: Grania
Southern, 1913 [1]

Hemigrania Lasserre, 1971

Grania is a genus of marine annelid worms in the class Clitellata. They are found at many depths in sands throughout the world. They are generally about 2 centimetres (0.79 in) in length and mostly colorless or white, though Grania colorata, a recently discovered species found in the Great Barrier Reef, is green.


There are 72 species in the genus Grania which have been identified. They include:[2]

An individual of an undescribed Chilean species of Grania (Photo by Pierre De Wit)